2nd Generation: Meta-Data Protocols

Three Generations of Protocols Table-of-Contents Platform for Internet Content Selection (PICS)
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Meta-data: "data about data" (Web resources).

All of these systems provide some "data about data."

(Any data that has a referent is meta-data. The definition of meta-data and semantics are dependent on the application and respective position of other layers.)


Joseph Reagle, HLS/W3C/LCS/MIT

W3C

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